Rare
Dullabha Sutta (AN 3:115)
“Monks, the appearance of three [persons] is rare in the world. Which three? The appearance of the Tathāgatha, worthy & rightly self-awakened, is rare in the world. A person who teaches the Dhamma & Vinaya proclaimed by the Tathāgata is rare in the world. A person who is grateful & thankful is rare in the world.
“Monks, the appearance of these three is rare in the world.”
